Live images (1)
These pages aim at displaying live star-test images and Aberrator equivalents.
The live-images are copyright by Roland Christen of Astrophysics.
Below on the left are the live-images (autocollimator) of a 5” APO-triplet. This particular lens were estimated 1/10 wave PV. Using an autocollimator (2-pass system) the images should should show a 1/5 PV wavefront error.